Monthly Climate Summary for December 2005 at Milhaguet (Carreau)
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A cold month, very wet early and late; severe glaze event on 30th     Back Forward
                       
Overall mean temperature was 1.1 C which is -3.0 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 4.1 C which is -3.0 degC compared with the 1971-2000 average
Mean night minimum (21-09) was -1.8 C which is -2.9 degC compared with the 1971-2000 average
Mean 24hr maximum (09-09) was 4.2 C              
Mean 24hr minimum (09-09) was -2.2 C              
  Highest day max was 8.3 C on the 31          
  Lowest day max was -2.3 C on the 28          
  Highest night min was 7.1 C on the 31          
  Lowest night min was -8.1 C on the 28          
  Lowest grass min was -11.6 C on the 28          
                       
Total rainfall this month was 136.1 mm which is 115.3 per cent of the 1971-2000 average  
  Highest daily fall was 40.0 mm on the 30          
Number of hours with rain was 107.0 hrs              
Equiv. TSR rainfall duration was 74.9 hrs which is   per cent of the 1971-2000 average  
  Highest no of wet hrs 20.0 hrs on the 3          
  Highest equiv duration 16.0 hrs on the 3          
  Mean rainfall intensity 1.82 mm/h              
                       
Total sunshine this month was 4.5 hrs which is 90.0 per cent of the 1971-2000 average  
Equiv. C/S sunshine total was 5.0 hrs which is 90.0 per cent of the 1971-2000 average  
  Highest daily sun was 0.4 hrs on the 3          
                       
Maximum snow depth was 0.0 cm on the            
                       
Mean sea-level pressure at 09Z 1020.8 mbar which is +2.2 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1034.2 mbar on the 10          
  Lowest pressure at 09Z 996.2 mbar on the 2          
                       
Number of days with:                    
Air Frost 21   0.2mm rain 9   No sun 8   Snow lying 0  
Grnd Frost 26   1.0mm 9   3h sun 0   Snow/sleet 3  
Max < 0C 3   5mm 8   6h sun 0   Hail 0  
Max > 10 0   10mm 6   9h sun 0   Thunder 0  
Max > 20 0   25mm 2   12h sun 0   Fog at 09Z 4  
Max > 30 0   50mm 0   15h sun 0   Gale 0  
                       
Notable events during the month:                
Coldest December since 2001                  
Severe glaze event on 30th; 20mm of rain fell between 09 and 14z with the temp rising slowly from -2 to 0C. A thaw followed.